30752130 has 32 divisors (see below), whose sum is σ = 74131200. Its totient is φ = 8164352.

The previous prime is 30752123. The next prime is 30752131. The reversal of 30752130 is 3125703.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30752097 and 30752106.

It is not an unprimeable number, because it can be changed into a prime (30752131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5026 + ... + 9314.

It is an arithmetic number, because the mean of its divisors is an integer number (2316600).

Almost surely, 2^30752130 is an apocalyptic number.

30752130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30752130 is an abundant number, since it is smaller than the sum of its proper divisors (43379070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30752130 is a wasteful number, since it uses less digits than its factorization.

30752130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 30752130 is about 5545.4603055112. The cubic root of 30752130 is about 313.2985613544.

Adding to 30752130 its reverse (3125703), we get a palindrome (33877833).

The spelling of 30752130 in words is "thirty million, seven hundred fifty-two thousand, one hundred thirty".